Perpetual calendar.



R. R. DEBACHER.

PERPETUAL CALENDAR. APPLlcATloN F|LEDJUN'E\,19\6.

Patented Oat. 1 6, 19N.

Wim/655 www PERPETUAL CALENDAR.

Specification of Letters Patent.

, Patented Get. 16, 1917.

Application led June 1, 1916. SeriaINo. 101,165.

To all whom t may concern.'

Be it known that I, ROBERT R. DE- BACHER, a citizen of the United States, and lresident of Hoboken, in the county of Hudson and State of New Jersey, have invented a new and useful Improvement in Perpetual Calendars, of which t-he following is a specification.

This invention relates to Aimprovements upon the perpetual calendar described, in my United States Letters Patent, No. 1164266, dated December 14, 1915; and has for its object to provide means for conveniently and coincidently indicating the day of the week, in addition to the month and date.

Another object is to provide means for accomplishing the above stated function, which means may be combined with my perpetual calendar without necessitating en largement of the same.

A further object is to provide certain improvements in the form, construction and arrangement of the several parts whereby the above and -other objects may be effec` tively carried out.

A practicalembodiment of my invention is represented in the accompanying drawings, in which,

Figure 1 represents a top plan view of the complete article;

Fig. 2 represents a front view of the same;

Fig. 3 represents an end view of the same;

Fig. 4 represents a section taken in the plane of the line IV-IV of Fig. 3, looking in the direction of the arrows;

Fig. 5 represents a section taken in the plane of the line V-V of Fig. 2, looking in the direction of the arrows; and

Fig. 6 represents an enlarged detail section, taken in the plane of the line VI of Fig. 4, looking in the direction ofthe arrow.

The outer casing and support of the calendar comprises a front 1, back 2, and base 3. These parts, as well as the remaining parts of the article operating to indicate the month and date, are the same as those shown in my said prior patent, and hence they will not be set forth herein.

Turning to the subject-matter of the present invention, the front 1 is provided on its inner face with an annular bearing 4, which may be soldered or otherwise suitably secured to the said front so as to surround the date reading windows 5.

An indicator card 6, in the form of a lcircular disk, is rotatably mounted on the periphery of the bearing 4,'and is appropriately inscribed with vthe common abbreviations denoting the days of the week, as clearly shown in Fig. 4. These inscriptions are arranged in the form of a circle and fitted to successively coincide with a reading window 7, fashioned in the front 1, as plainly seen in Fig. 2. This indicator card 6 may be composed of any suitable sheet material, but I prefer Celluloid.

A transparent shield S is fitted within the bearing 4, so as to cover the reading windows 5, and it and the card 6 are held in assembly with the front 1, by clips 9, arranged in an annular series on the bearing I4, and adapted to be alternately bent inwardly and outwardly for engagement with the shield 8 and card 6.

For the purpose of actuating the indicator card 6, I have provided a set of seven ears 10, which radiate from the periphery of the card and are jfitted to successively protrude through a slit 11 in the top of the front 1, for manual operation.

Provision is made for locking the indicator card 6 against accidental movement from its various predetermined positions, which consists in a spring detent 12, one end of which is fixed to the front 1 by means of solder or in any other appropriate manner. This detent 12 has a knob 13 projecting laterally from its free end for engagement with holes 14 circularly disposed in the card 6. It will be noted that these holes 14 are so located that when any one of them is in Contact with the knob 13, an inscription on the card 6 will be in register with the reading window.

The operation of the device will be obvious from the foregoing description when taken in connection with the drawings; and I desire it to be understood that various changes may be made in the form, construction, arrangement and location of the several parts without departing from the spirit and scope of the invention; hence I do not intend to be limited to the details herein shown and described except as they may be included in the claims.

What I claim is: i

1. In a perpetual calendar having means vfor indicating ythe month and date, mechaf ually rotating the card to bring successive portions in register With the day Window, andnieans `for locking the card in predetermined positions against accidental movement. v l

2. In avgperpetual calendar having means for indicating the month and date,y mechanism for indicating the day of the Week,

\ lsaid mechanism comprising a casing having suitable reading Windows for the date Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

and day, an annular bearing surrounding the date Window, a transparent shield for the date Window arranged Within the bearing, a day indicator card rotatably mounted on said bearing, clips on the bearing eX- tending inwardly and outwardly for .holding the shield and card in position', means for rotating the card to bring successive portions in register With the day Window, and means for locking the card in predetermined positions against accidental movement.

In testimony, that I claim the foregoing as kmy invention, I have signed my name this 26th day of May 1916..

ROBERT R. DEBACI-I R.

Washington, D. C. 

